One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(9,10,12,14)(11,15,16,13)(17,18,22,20)(19,25,27,23)(21,24,30,28)(26,32,29,31)(6,8)(9,10)(11,13)(12,14)(15,16)(17,19,22,27)(18,23,20,25)(21,26,30,29)(24,31,28,32)(5,6,7,8)(9,10)(11,15)(12,14)(13,16)(17,20,22,18)(19,23,27,25)(21,28,30,24)(26,31,29,32)(1,2)(3,4)(9,11,12,16)(10,13,14,15)(17,19)(18,23)(20,25)(21,29)(22,27)(24,32)(26,30)(28,31)(9,10)(11,15)(12,14)(13,16)(17,21)(18,24)(19,26)(20,28)(22,30)(23,31)(25,32)(27,29) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.